MFG : Hach. MFG Part Number : 2895805. Evantec Code : 77-2895805. MSRP : $20.00. Description Specs CofA SDS Fisher VWR. Hach 2895805, Reducing Adapter, 16MM/13MM Vials, 5 PCS. These aluminum tubes are inserted into the 16 mm vial wells of existing reactors, to adapt them to the 13 mm TNTplus vials